Challenge 95 is primarily a release for flexible and rigid polyurethane elastomers and foams. It can be used for other polyurethane systems as well, however, it is advisable to test prior to its use. Challenge 95 is a universal release for plaster, metal, urethane, and epoxy moulds. Challenge 95 dries at room temperature to create a uniform film. This release is a blend of synthetic and natural high temperature waxes dispersed in petroleum distillates.